Cola-mining machine.



A. REA.

COAL MINING MACHENE.

APPLICATION FILED FEB. 14. 1918.

1 ,27 1,6 l '7 Patented July 9, 1918.

4 SHEETSSHEET I.

u 7, s E QMW'M f @wzma 26w A. REA.

COAL MINING MACHINE.

APPLICATION FILED FEB. 14. 1918.

1 71,617, Patented July 9, 1918.

' F E- 4 4 SHEETSSHEET 2.

A. REA.

COAL MINING MACHINE.

APPLICATION FILED FEB.14. X918.

1 ,27 1,6 17. Patented July 9, 1918.

4 SHEETS-SHEET 3- mmwltoz TITS. 5...

19mm 6% K I s @04550 Jfew A. REA.

COAL MINING MACHINE.

APPLICATION FILED FEB.14.I9I8.

Patented July 9, 1918.

4 SHEETS-SHEET 4- hEEi- AGOSTINO REA, 0! HELPER, UTAH,v I

orricn;

COAL-MINING MACHINE.

To all cvhom it may concern:

Be it known that I, Aeos'rrNo REA, a citizen of the United States, residing at Helper, in the county of Carbon and State of Utah, have invented certain new and useful Improvements in Coal Mining Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates principally to that v class of mining machines employing .a vertically disposedsupporting frame, a coal drill, a feed nut through which the shaft of the drill is threaded, and drivin means for the drill carrying shaft including gearing mounted on a horizontal frame which is adjustable vertically along said supporting frame. I

One object of my invention is to provide an attachment to-be used in connection with the parts above set'forth for-the purpose of accurately controlling-the speed at which the drill is advanced to the Work, and to this end a further object is to so construct the attachment as to permit its use without in any way altering the old parts of the machine. t

A still further; object of the mvention 1s to provide an electric motor for driving the gearing of the drill operating means, and to so construct the horizontal frame above mentioned, as to fpermit mounting of the motor on one" end 0 the caring at-the other end thereof.

1th the foregoing. general objects in view, the invention resides in the novel features of construction and unique combination of parts to be hereinafter fully described and claimed, the descriptive matter being supplemented by the accompanyin drawings which form a part of this speci cation and in which Figure 1 is a side elevation of a mining machine constructed in accordance. with my invention, the upper end of the vertical sup-' porting frame being broken away; Fig. 2 is a horizontal-section on the plane of the line 2-2 of Fi 1 illustrating a top lan view of the dril carrying shaft,,the

eed nut, and the attachment which is inter posed between this nut and the bearing. of

th g ar which drives a d h ft; 1

Specification of -Iettera ratent. Application filed February 14, 191;. Serial 1%. 217,184.

this frame and positioning of- Patented-July e, 1918.

Y Figs. 3.and 4 are transverse sections on the planes indicated by the lines 3-3 and 4- 4 "of Fig. 2;

F1 5 is a central longitudinal section through the feeding means of the drill carrying shaft, this view beinglcut substan-.

tially on the plane of the line 5-15 of Fig. 2; F1g. 6 is a sectional view on the plane indicated by the line 6-6 of Fig. 2, showing a side elevation of the feeding means;

Figs. 7 and 8 are horizontal sections on the planes of the lines 7-7 and 88 .of Fig. 1, showing respectively a top and a bottom vlew of the motor supporting frame; and

Fig. 9 is a detail side elevation showing a saw attachment applied.

j In the drawings above briefly described, the numeral 1 designates a vertically disposed supporting frame having suitable adustable prongs 2 at its upper and lower ends, the side bars of said frame having vertically spaced notches 3 in one edge, this exact construction being well known and therefore forming no individual part of my invention.

The .drill 4 is provided on its rear end with a socket 5 receiving a tapered plug 6 on the front end of a drill carrying shaft 8 whose rear end'is also rovided with a tapered plug 9. The sha t 8 is threaded through a split nut 10 whose two halves are secured together by the usual key 11 said nut being provided with the .wellknown which the frame 1 is constructed. Due to the nature of the present invention, however, the nut 10 is spaced from the frame 1 as will be hereinafter set forth. The rear end of the nut 10 is provided with the usual sectional socket 13 which was formerly positioned around the polysided head or plug 14' of the well known right angular bearing bracket 15 (see Fig. 5). In accordance with my invention, however, the socket 13 engages a part of the attachment above referre to, and a socket on such-attachment cooperates with the plug 14.

A beveled gear 16 is rotatably supported by the upper end of the'bearing bracket 15 and is provided with keys 17 receivable in longitudinal kevwavs 18 formed in opposite sides of the shaft 8, so that this shaft may sh thro gh the-seer bu will at the sam time be rotated thereby. 'Gear 16 meshes with a pinion 19 on the upper end of a short vertical shaft 20 whose lower end is provided with a plug 21 receivable in the socket 22 at one end of a universal joint 23, this joint being carried by one end of a vert1cal drive shaft 24 which is driven by means yet to be described.

The attachment above referred to (featured in Figs. 2 to 6) is constructed as follows:

A brake drum-25 is provided on one end with a suitably shaped plug 26 for reception in the socket 13 of the usual split nut 10, the op osite end of said drum having a central soc et 27 into which one end 28 of a supporting member in the form of a split sleeve 29 projects, said drum being thus rotatably mounted on said supporting member. The drum 25' is provided with a central bore 30 through which the shaft8 passes and the split sleeve 29 surrounds said shaft as shown clearly in Fig. 5. 'The end of the supporting sleeve 29 opposite the journal 28 thereof, is

provided with a socket31 adapted to receive the plug 14 of the bearin bracket 15 as isalso clearly shown in 1g. 5. The supporting sleeve 29 occupies the space in which the split nut 10 was formerly located, and

said sleeve is provided with oppositely eX-- tending arms 32 which are receivable in the notches 3 for supporting the shaft 8 and adjacent parts in any required position.

A brake band 33 surrounds the brake drum 25 and is held against removal therefrom in one direction by an annular flange 34 with which said drum is provided. An adjustin screw 35 having a hand wheel 36, is provi. ed for operating the brake band 33 so as to either permit the brake drum 25 to rotate or to hold this drum against rotation, -By this means, therefore, the split nut 10 may be permitted to rotate with the shaft 8 or may be held against rotation with said shaft, and thus this shaft may be fed forwardly as required.

The screw 35 is swiveled in one end of an angular bracket arm 37 which is removably secured by means of a key 38 to a lug 39 extending from one half of the split sleeve 29. On the other half of this sleeve is secured a lug 40 through which a set screw 41 is threaded, said set screw bearing against the lowerend of the arm 37 to hold the two halves of the sleeve 29 together. The arm 37'rests at its lower end upon a fiat surface 37 so that tightening of the screw 41 can-- not tilt said arm. Arm 37 not only provides means for mounting the screw 35, but it will be obvious from the drawings that this arm prevents removal of the 'ournal 28 from the rake drum 25, unless ey 38 is removed. When this is done, however the two parts may be separated. This separation is necessary when the bearing bracket 15 and its coacting parts must be removed to permit the machine to be operated directly from the end of the shaft 8.

' From the foregoing, taken-in connection with the accompanying illustration, it will be obvious that the attachment is of simple and inexpensive nature, and that it may be easily applied. In installing this device, the key 11 of-nut 10 is removed to permit expanding of this nut, so that its socket 13 ma be disengaged from the plug 14. The soc et 31 of the supporting sleeve 29 is now engaged with plug 14 by first expanding the sleeve by loosening the vset screw 41 and renioving the key 38. This having been done, the brake drum 25 is rotatably engaged with the journal 28 by positioning the latter in the socket 27, and the sleeve in question may then be again connected with the brake band 33 by re-insertion of key 38, and the screw 41 tightened to clamp the two halves of the sleeve tightly together. The arms 32 of the sleeve 29 are received in the notches 3 previously occupied by the arms '12 of the nut 10, and this nut is secured to the drum 25 by closing its socket 13 around'the plug 26 of said drum, after which the key 11 is driven in place. When installed as set forth, the attachment may be used as folows:

When drillin in soft coal, the brake band 33 may be tight y clamped around the drum 25 by proper actuation of the hand wheel 36, and when the parts are thus arranged, rotation of the shaft 8 will not only drive the drill 4, but will cause this shaft to travel through the nut'. In drilling in hard coal, the brake drum 25 at the start is permitted to rotate with the nut 10, by proper release of the brake 33. 'The drill will thus rotate but will not feed ahead. By now gradually tightening the screw 35 the nut 10 will be slowly brought to a standstill so that the feeding of the drill will begin gradually. If necessary, the brake band 33 need not be entirely contracted around the drum 25 and thus the required slippage between these parts may take place to permit extremely slow feeding of the drill. In other words, this slippage will permit the nut 10 to rotate to the required extent with the shaft 8, but the rotation of such nut will nevertheless be retarded sufficiently to cause it to feed the shaft 8 to the required extent. The attachment may be operated the same way whether the machine is drilling horizontally or vertically.

The foregoing completes a detail description of one feature of the invention, the other feature residing in the horizontal frame 45, the gearing 46 at one end of said frame for driving the shaft 24 and numerous attachments, and the motor 47 supported by the other end of the frame. Frame 45 as featured in Figs. 1, 7 and 8,

a rigid transverse bar-49, said side bars ex- 11 p includes a pair of parallel side bars 48 and comprising a brake drum having on one end ug for reception in the socket, of the tending across the side bars of frame 1 usual feed nut of the machine, a brake cowhereas bar 49 abuts the rear edges of sai bars to prevent tilting of the frame 45 porting said brake from the'frame of the around the-keys 50 which secure-this frame machine,

in lace by passage into the notches-f3.

v 2. An attachment for mining machines s shown most'clearly in Figs; 1 -and"7,-';'c0mpr1s1ng a brake drum and means for at- 4 the motor 47 is positioned partly between. tachingit to the feed nut of a mining masaid pin also extending t the ends of the side bars-48andisprovided chine, a brake coacting with said drum, a with avertical lug 51. having" an openmg supporting memberfor said brake and drum, through which-a transverse 52 is passed, and,mean's for supportin said supporting tough ears 5Kmember from the'usual fr which rise from said sidebars. By this chine. means, the motor is supported from the:

. frame. 45 in such a manher'as to permit comprising a brake drum and means. for atto be easily; detached whenever required tachmg it to the feed'n'ut of a mining ma- This form of attaching means'for the motor 'Jchine, a brake coacting with said drum, a

also permits the latter to befof a well known. supporting memberfor said brake and drum,

construction, no alterations being necessaryand oppositel extending arms on said supin adapting it to the new. A'suitablef porting mem er for supporting said memacting; with said drum, and means for sup- 3; An attachment for 'lmining machinesa detachable connection 54 isprovidedbetween. g g

attachmentfor mining machines the motor 47 and the gearing 46 and all bearings of this gearing are preferably of the roller or ball type, 1n order'to reduce frica i v chine, a rake coacting with said drum, a 'Two short transverse shafts 55 and 56 .are I tion to the minimum.

driven by the gearing 46, said shaft 55 -be-. ing preferably equipped with an emery wheel or the like 57 by which'the drill 4 may be sharpened whenever necessary. A hand crank such as 56 '(Fig. 7) may be used upon the shaft 56 for driving the machine by hand when motor 47 isremoved, but when this motor is in use, a saw attachment 58 may well be mounted pn. the shaft 56as disclosedin Fig. 9, a suitable spring device 59 being preferably connected to the attachment 5.8 and passed around a suitable guide 60 on frame 45, for'the purpose of feeding the saw toward the wor Except when its use is necessary, the attachment 58 will remain detached from the machine, but whenever it is to be used, the attachment may be quickly and easily applied.

From the foregoing, taken in connection with the accompanying drawings, it will be obvious that although my invention entails little departure from the mining ma chines now commonly employed, it will preduce a devicewhich is much more eflicient and advantageous in every way. Particular emphasis is laid upon the novel feeding means for the drill carrying shaft and upon the provision of the frame 45, these being the principal improvements which I have made over the old machine. -Sinc'e probably the best results are obtained from the sev eral details shownand described, these details are preferably employed, but I wish it understood that within the scope of the invention as claimed, numerous minor changes may well be made.

I claim i 1; An attachment for mining ma hines ber'from'the usual frame of the machine.

comprising a brake drum and means for attachi'ng 1 tothe feednut'of a miningmasupporting member for said brake and drum, means for supporting said supporting memher from the usual frame of the machine, and a socket. on said su porting member to receive the plug on the hearing of the usual drill shaft driving gear.

5. An attachment for mining machines comprising a brake drum and means for attachlng it to the feed nut of .the machine, a support'in' the form of a split sleeve, a bearing connection between one end of said sleeve and said drum, a sectional socket on the other end of said sleeve for passage around the plug of the usual bearing of the drill shaft drivlng gear, means for supportin said sleeve from the frame of the machine, and a brake coacting with said drum. 6. An attachment for mining machines comprising a brake drum and means for attaching one end of said drum to the usual feed nut of the machine, the other end of said drum havin a central socket, a suppoi ting member or said drum in the form of a split sleeve, one end of said sleeve extending into said socket and forming a journal for said drum, a sectional socket formed on the other end of said sleeve for passage around the plug of the usual bearing of the drill shaft driving gear, and a brake co-' acting with said drum.

7. An attachment for mining machines comprising a brake drum, having on one end a plu for reception in the socket of the usual eed nut of the machine, a support in the form of a split sleeve alined with said drum, a bearing connection between one end of said su port and said drum, a sectional'socket ormed on the other end of said sleeve, -;for passage around the plug on ame of the mathe usual bearing on the drill shaft driving gear, means for supporting said sleeve from the frame of the machine, and a brake coactiniwith said drum.

8. n attachment for mining machines comp'iising a brake drum and means for attachln'g one end thereof to the feed nut, of the machine, the other end ofvsaid drum having a central socket, a seup ortin member having a journal receiv 1n sai to rotatably support said drum, a bracket for supportin said brake band, said bracket being secure to said supporting member and means for supporting said supporting member from the frame of the mac ine.

9. A mining machine comprising a supporting frame side bars, a horizontal frame including a pair of horizontal side bars extending across socket including a pair of vertical said vertical bars, means for connecting the two frames, a drill, a motor for driving said drill, said motor being positioned betweenthe side bars of said horizontal frame at one end of the latter, a lug on said motor having an opening, and a transverse pin passing through said opening for supportmg said motor from said horizontal bars in a etachable manner, and means. for applying hand power for driving the drill when said motor is removed.

In testimony whereof I have hereunto set m hand in the presence of two subscribing witnesses. a

AGOSTINO REA. Witnesses: i a

Eva 0001:, G. L. KING. 

